71216528 has 20 divisors (see below), whose sum is σ = 138681600. Its totient is φ = 35427744.

The previous prime is 71216507. The next prime is 71216539. The reversal of 71216528 is 82561217.

It is a junction number, because it is equal to n+sod(n) for n = 71216494 and 71216503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8000 + ... + 14367.

It is an arithmetic number, because the mean of its divisors is an integer number (6934080).

Almost surely, 2^71216528 is an apocalyptic number.

It is an amenable number.

71216528 is a deficient number, since it is larger than the sum of its proper divisors (67465072).

71216528 is a wasteful number, since it uses less digits than its factorization.

71216528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22574 (or 22568 counting only the distinct ones).

The product of its digits is 6720, while the sum is 32.

The square root of 71216528 is about 8438.9885649881. The cubic root of 71216528 is about 414.5022881221.

The spelling of 71216528 in words is "seventy-one million, two hundred sixteen thousand, five hundred twenty-eight".